1997 · ソースブック（プレイを拡張するルール／オプション）
Field Manual: Mercenaries
This reference book examines mercenary forces operating across the war-torn Inner Sphere during the 31st century. It covers the organization, history, commanders, tactics, and special capabilities of more than forty prominent mercenary units. Rules support creating and managing a custom mercenary command, including guidance for building its roster and reflecting the distinctive abilities of different formations.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）ダイス（主にd10）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。